64688346 has 12 divisors (see below), whose sum is σ = 140158122. Its totient is φ = 21562776.

The previous prime is 64688341. The next prime is 64688347. The reversal of 64688346 is 64388646.

It can be written as a sum of positive squares in only one way, i.e., 35105625 + 29582721 = 5925^2 + 5439^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64688341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1796881 + ... + 1796916.

Almost surely, 2^64688346 is an apocalyptic number.

64688346 is an abundant number, since it is smaller than the sum of its proper divisors (75469776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64688346 is a wasteful number, since it uses less digits than its factorization.

64688346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3593805 (or 3593802 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The square root of 64688346 is about 8042.9065641719. The cubic root of 64688346 is about 401.4289433900.

The spelling of 64688346 in words is "sixty-four million, six hundred eighty-eight thousand, three hundred forty-six".